* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

.container {
	position: relative;
	/* height: 100%; */
}

.image-list {
	position: sticky;
	top: 0;
	height: 100vh;
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
}

.image-list .item {
	position: absolute;
	width: 400px;
	height: 500px;
	background-size: 100% 100%;
	opacity: 0;
}
.image-list .item:nth-child(1) {
	background-image: url("https://www.apple.com/v/homepod-2018/a/images/overview/homepod_side__brlxkl4gtrf6_medium_2x.jpg");
	opacity: var(--part1);
}

.image-list .item:nth-child(2) {
	background-image: url("https://www.apple.com//v/homepod-2018/a/images/overview/guts_4__dfs8aga4geoi_medium_2x.jpg");
	opacity: var(--part2);
}

.image-list .item:nth-child(3) {
	background-image: url("https://www.apple.com/v/homepod-2018/a/images/overview/guts_1__ddez8kzp4omu_medium_2x.jpg");
	opacity: var(--part3);
}

.image-list .item:nth-child(4) {
	background-image: url("https://www.apple.com/v/homepod-2018/a/images/overview/guts_2__cnol9djca7bm_medium_2x.jpg");
	opacity: var(--part4);
}
.image-list .item:nth-child(5) {
	background-image: url("https://www.apple.com/v/homepod-2018/a/images/overview/guts_3__k9w71kkilbuy_medium_2x.jpg");
	opacity: var(--part5);
}

.image-list .item:nth-child(6) {
	background-image: url("https://www.apple.com//v/homepod-2018/a/images/overview/guts_4__dfs8aga4geoi_medium_2x.jpg");
	opacity: var(--part6);
}
.image-list .item:nth-child(7) {
	background-image: url("https://www.apple.com/v/homepod-2018/a/images/overview/homepod_side__brlxkl4gtrf6_medium_2x.jpg");
	opacity: var(--part7);
}

.text-list .item {
	height: 100vh;
	display: flex;
	justify-content: center;
	align-items: center;
}

.text-list .item .text {
	width: 300px;
	height: 300px;
	background-color: rgba(0, 0, 0, 0.4);
	font-size: 30px;
	color: #fff;
	z-index: 1;
}
